phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '-1' for key 'session_user_id'

INSERT INTO phpbb_sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in, session_admin) VALUES ('7b80be8cbac4d2fdd19fd1d9a567dcb3', -1, 1714043021, 1714043021, '2cc81bd7', -1, 0, 0)

Line : 187
File : sessions.php